Biology

Ghost catsharks When ghost catsharks are born, the embryos have two rows of large tooth-like denticles on their back, which the scientists believe they use to hatch themselves out of the egg capsule. White orange roughy The orange roughy (Hoplostethus atlanticus) got its name because of its colouration and the special scales (scutes) formed along the belly thus making this part of the body resemble like an “armoured chest”. Scientists are fascinated of this fish, which might live until the age of 150 and can switch of its colour and become white! Weird and wonderful deep sea fish Ingvar Byrkjedal, a vertebrate curator at Bergen Museum, shared some fascinating deep sea specimens, some dating from nearly 100 years ago! Orange roughy story Should we eat the Orange Roughy? Justifying MAR-ECO – the Orange Roughy experience. A medium sized fish with a firm, tasty white flesh, the Orange Roughy is a gourmet item on many restaurant menus. Deep-sea fish Deep-sea fishes: it may be that their life histories make them especially vulnerable to exploitation. Seaturtles Sea turtles undertake a tremendous migration that can cross the Atlantic ocean twice. Cephalopods Squids are cephalopods. The Cephalopods are a class of marine molluscs (soft-bodied animals) that include the octopus, squids, cuttlefish and nautilus. They have a well-developed head (cephalas), large brain and eyes that closely resemble vertebrate eyes in structure. The head is surrounded by prehensile tentacles Cephalopods Mike Vecchione, who is a MAR-ECO scientist and a cephalopod specialist presents a brief, popular description on cephalods. Zooplankton The fascinating oceanic zooplankton: conveyors of energy from the surface to the deep sea. Facts about cephalopods Some interesting facts about cephalopods from the FAQs on the Cephalopod Page. The Cephalopod Page (TCP) was created and is maintained by Dr. James B. Wood and is hosted by Dalhousie University and the University of Texas Medical Branch. Fishing the ridge Fisheries on the ridge: Prospects for fisheries on the seamounts, a russian study. Original paper by V.I.Vinnichenko, summarized by Elinor Bartle Fish genetics How can genetics be used to study fish populations?Rus Hoelzel and Halvor Knutsen have developed a project that uses genetic markers to identify population structure, levels of diversity within local populations and aspects of demographic history. Genetic Diversity and Population Structure Genetic Diversity and Population Structure of Deep-Sea Fish in the North Atlantic. Orange Roughy cartoon To adapt life deeper than the light, deep-sea fishes has special features - as illustrated in the cartoon about Orange Roughy.